2. Remove the left scale [A] (2 screws). 3. Place the DF exposure glass [B] on the glass holder. NOTE: When installing the DF exposure glass, make sure that the white point [C] is positioned at the lower front side, as shown. 4. Peel off the backing [D] of the double side tape attached to the rear side of the scale guide [E], then install the scale guide (2 screws removed in step 2). 5. Install the two stud screws [F]. 6. Mount the DF by aligning the holes [G] in the DF with the stud screws, then slide the DF to the front as shown. 7. Secure the DF unit with two screws [H]. 8. Connect the cable [I] to the copier.